Baling-press.



I K E b No. 879,292. PATENTED FEB. 18, 1908.

' W. e. MERRALL.

BALING PRESS.

APPLIGATION FILED MAR.5,1907.

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is: Ilokms PETERS cm, WASHINGTON n c PATENTED FEB. 18, 1908.

W. G. MERRALL. BALING PRESS.

APPLIGATION FILED MAR.5.1907.

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WARD GRANT MERRALL, OF ONONDAGA, ONTARIO, CANADA.

BALING-PRESS.

Specification of Letters Patent.

Patented Feb. 18, 1908.

Application filed March 5. 1907. Serial No. 360.727-

To all whom it may concern:

Be it known that I, WARD GRANT MER- BALL, of the village of Onondaga, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Baling- Presses, of which the following is a specification.

This invention relates to certain improve ments on a baling press patented to me in the United States of America on the 25th day of December, 1906, No. 839,170, and my principal objects are to sim lify and improve the operating mechanism 0' the baling-plunger and the reciprocating feeder, and .to devise efficient means for placing abutmentboards' into the machine to separate the bales, and my invention consists essentially of the constructions hereinafter more specifically described, and then definitely claimed.

Figure 1 is a side elevation of my improved press. Fig. 2 is a plan view of the same.

ig. 3 is a perspective detail showing particularly the abutment-board introducing mechanism. Fig. 4 is a detail in elevation showing the abutment -board introducing means in the osition it occupies when a board is being introduced into the machine. Fig. 5 is a rear end view of part of the plunger showing the friction rollers connected to its lower edge. Fig. 6 is a cross section of the cam and the end of the slid e-rod operating the feeder. Fig. 7 is a face view of the cam. Fig. 8 is a sectional detail of one of the bearings for the feeder-lever. Fig. 9 is a front view of the end of the press illustrating the tensioning device.

In the drawings like letters of reference indicate corresponding parts in the different figures.

1 is the frame of the press, in its general arrangement similar to my former construction, and shaped to form a compression chamber. Within this chamber the plunger 2 is horizontally movable under the opening 3 through which the hay is fed. 7 The plunger is operated by a toggle-lever comprising the two parts 7 and 8 pivoted. together, the free end of the part 7 being pivoted to the rear of the plunger, and the free end of the part 8 pivoted onthe axle extending transversely of the frame. (See Fig. 2.)

The part 8 is preferably double, as shown, and embraces the end of the part 7. Between the halves of the part 8 is journaled the lower end of the connecting rod 9, the other end of which is journaled on the wrist pin 10 connecting the two gear disks 11, secured to the shaft 12, journaled on the frame of the machine. These gear disks are driven in a manner to be hereinafter described. It is evident that by their rotation the togglelever will be alternately straightened and bent and the plunger thus caused to reciprocate in the compression chamber. While the plunger is being pushed forward against a charge of hay, or other material, the tendency of the toggle-lever is to lift the plunger and at the same time to tip it. In order to resist this tendency I provide the lower edge of the plunger with an arm 13, which extends down through a slot formed in the under side of the frame, and is provided with one or more friction rollers 14 which engage the under side of the guideways 15 formed on the frame. The tipping tendency is overcome by providing the plunger with one or more guide bars 1 secured to the rear of the plunger, which are each engaged by one or more pairs of grooved rollers 5 journaled on the frame of the machine.

The gear disks 11 with the wrist pin 10 practically form a crank for the shaft 12. These gear disks mesh with. the pinions 16 fast on the shaft 17 journaled on the frame. This shaft carries the gear wheel 18 meshing with the pinion 19 on the shaft 2t which carries the pulley 21 and the fly-wheel 22.

The pinion 19 is loose on the shaft 20 but may be given a driving connection therewith by means of the clutch 23, which is of ordinary construction, and which may be operated by means of a clutch shifter 24, part of which only is shown as being of ordinary construction.

From the construction described it follows that as long as the shaft 20 is driven the plunger 2 will be regularly reciprocated in the compression chamber.

Operating through the opening 3 is the feeder 25, pivotally connected to the forward end of the lever 26. This lever is pivoted intermediate its ends on the brackets 27 extending up from the frame.

A link 28, pivotally connected to the brackets and to the feeder, serves to give the latter a parallel motion.

It wil be noted that the feeder-lever or arm is double, and to the rear ends of its parts are pivotally connected the upper ends of the links 29. The lower end of each link is ivotally connected to one end of the roc z-arm 3O pivoted on the frame of the machine. connected with the lower end of a slide-rod 31, the upper end. of which embraces the shaft 12. On this shaft, adjacent to each slide-rod, is secured a cam 32 provided with a suitable cam groove engaging the pin 33 projecting from the slide-rod 31. (See Figs. 6 and 7). Thus the rotation of the shaft 12 through the slide-rods 31,rockarms 30, links 29 and feeder-lever 26 imparts a vertical reciprocating motion to the feeder It is desirable that a certain amount of yield should be permitted to the feeder in case it comes into contact withv a quantity of material to be baled of extra thickness or of greater compactness than ordinary. T 0 provide this yielding action 1 provide on the brackets 27 the guides 34c in which the bearing blocks 35 for the feeder-lever 26 are vertically movable. From each bearing block a bolt 36 extends down through the bottom of the guide.

A coil spring engages the bottom of the guide, and a nut 37 on the bolt. These springs provide the necessary tension to hold the bearing blocks 35 down under any ordinary strain but will yield under the extraordinary conditions already referred to. T he tension of the springs is of course readily adjustable by means of the nuts.

The press is provided at each side with the spring actuated dogs 38 as in my prior pat ent. These, as before, serve to retain the hay in position as it is compressed. In the present machine I provide, in addition, a special retainer 39, which is situated at the forward edge of the opening 3 and behind the dogs 38 a distance substantially equal to the thickness of one compressed charge of hay, or other material to be baled. This retainer, it will be seen, is vertically curved, the convex side of the curve being presented rearwardly. This retainer is secured to arms 40 pivoted at opposite sides of the machine. The retainer is normally held down by coil springs 41 secured to the arms 40 and to the frame of the press.

As each charge of hay, or other material, is compressed by the plunger it is forced forward under this retainer which lifts to permit of its discharge. The last charge compressed is pushed forward and its rear sides engaged by the dogs 38. The retainer 39, when the plunger has completed its forward stroke,

engages the rear side of the new charge and prevents it falling back into the compression chamber below the opening 3.

As in my former patent, the forward end of the frame is composed of the angle-bar corners 42 and T-iron side bars 43, free at their outer ends save that each angle is connected to the adjacent T-bar by the strap 44, which serves to hold the T-bars in position.

A tensioning device is provided as in my tact with the projections 61.

former patent. This comprises a frame 4:5

Each rock-arm 30 is pivotally fitting close under the lower angle-bars 43,

and embraces closely the sides of the frame. On the side bars 46 of this frame slides amovablebar 47 resting on the upper angle-b ars 43.

Toggle-levers 48 are pivoted at their upper ends in the upper part of the frame 45 and at their lower ends on the movable bar 47. Centrally these toggle-levers are pivoted on the nuts 49, right and left hand threaded re spectively. A screw 50, similarly threaded, is screwed into these nuts and provided at each end with a suitable hand wheel. It is evident that by operating the screw the toggle-levers may be operated to force together the upper and lower angle-bars to any extent c necessary to give a suitable tension to the compressed hay as it is forced through the press.

To suitably support the bales so that they may be readily wired it is usual to employ abutment boards such as 51. The last part of my invention relates to the means I have provided for introducing these boards into the machine at suitable times. The abutment-board holder comprises a pair of parallel guides 52 connected to the side frames 53. The side frames are each pivoted at 54. on the frame of the machine, and each side frame has a rearwardly extending portion 55 which normally rests on top of the frame of the machine, or other suitable part. Each of the guides 52 comprises preferably an L-angle bar 56 and an upper bar 57 suitably secured to the outer side of the L-angle bar. The forward ends of these upper bars aer preferably curved upwardly, as shown, to facilitate the slipping of the abutmentboards into place between them and the horizontal portions of the L-angle bars. The forward ends of the guides are held in substantially rigid relationship to one another by the cross bar 58 connecting the side frames 53. A certain amount of spring is however possible. The rearward ends are connected by means of a cross bar 59 which p asses through the side frames adjacent to the rearward ends of the guides. Nuts are screwed on the ends of this cross bar, and between these nuts and the side frames are placed elastic washers 60. On each L-angle bar56 is formed an inwardly and rearwardly inclined projection 61.

As the abutment-boards 51 fit fairly closely between the sides of the L-angle bars these projections, under ordinary conditions, will prevent them from being pushed entirely through the guides.

As an auxiliary to the elastic washersIprefer to employ a coil spring 62 connected. at each end to the side frames or the guideways.

Normally the abutment-board holder lies in the position shown in Figs. 1 and 3. When an abutment-board is placed in position in the holder its rearward end is in con- At the proper time the holder is tipped to the position shown in Fig. 4. Although the guides are now in a vertical position the abutmentboard will not fall through them owing to the frictional engagement with the projection 61. I provide, however, a projecting lug 63 on the feeder 25. As the feeder descends this lug strikes the upper edge of the abutmerit-board and forces it down through the guides into the interior of the press, and against this abutment-board thenext charge of hay, or other material, is forced.

For convenience in tipping the abutmentboard holder I provide handles 64, one on each angle-bar 56.

Although I show, and prefer to use, the projections 61 it is evident that if the coil spring 62, or the washers 60, have suflicient tension that the friction of the angle-bars 56 would be sufficient to prevent the abutmentboard dropping when the parts are in the position shown in Fig. 4.

To act as a stop when the abutment-board holder is tipped to the vertical I secure to each angle bar 56 a notched piece 65 which engage the angle bars 42 and prevent further movement of the holder (see Fig. 4).

What I claim as my invention is:

1. In a baling press the combination of a compression chamber having a feed opening in its upper side; a plunger movable in said chamber; a retainer located at the forward side of the opening, and adapted to lift to allow a charge to be forced past it; and spring actuated holding dogs located at each side of the chamber forward of the retainer a distance substantially equal to the thickness of a charge, substantially as described.

2. In a baling press the combination of a compression chamber; a plunger movable therein; a toggle-lever pivoted at one end on the frame of the machine and. at the other to the plunger; a connectingrod pivoted on the toggle-lever at or near its center; a crank shaft journaled on the frame of the machine, the other end of the connecting rod being journaled on the crank of this shaft; a feeder-lever journaled on the frame; a feeder connected to the said lever; a cam on the crank shaft; and connections operable by the cam for rocking the feeder-lever, substantially as described.

3. In a baling press the combination of a compression chamber having an opening in its upper side; a feeder vertically movable through said opening; a feeder-lever pivoted on the frame of the machine and to which the feeder is connected; a rock arm pivoted on the frame; a link pivotally connected to the rock arm and feeder-lever; a slide-rod suit ably guided and pivoted on the rock-arm; a shaft; and a cam on said shaft adapted to operate said slide-rod, substantially as described.

4. In a baling press the combination of a compression chamber having an opening in its upper side; a feeder vertically movable through said opening; a feeder-lever pivoted on the frame of the machine and to which the feeder is connected; a rock arm pivoted on the frame; a link pivotally connected to the rock arm and feeder-lever; a slide-rod suitably guided and pivoted on the rock arm; a shaft; a cam on said. shaft adapted to operate said slide-rod; a plunger movable in said compression chamber; a toggle-lever pivoted at one end on the frame of the machine and at the other on the plunger; a crank on the aforesaid shaft; and a connecting rod pivotally connected to the crank and to the toggle-lever at or near its center, substantially as described.

5. In a baling press the combination of a compression chamber having an opening in its upper side; a feeder vertically movable through said opening; a feeder-lever to which the feeder is connected; a fulcrum for the feeder-lever vertically movable against spring pressure; a rock arm pivoted on the frame; a link pivotally connected to the rock arm and feeder-lever; a slide-rod suitably guided and pivoted on the rock-arm; a shaft; and a cam on said shaft adapted to operate said slide-rod, substantially as described.

6. In a baling press the combination of a compression chamber having an opening in its upper side; a feeder vertically movable through said opening; a feeder-lever to which the feeder is connected; a fulcrum for the feeder-lever vertically movable against spring pressure, substantially as described.

Brantford, Ont, 28th of February, 1907.

WARD GRANT MERRALL.

Signed in the presence of M MATTIE BEATRICE MERRALL, IRENE BAXTER. m 

